Advanced search
Start date
Betweenand
Related content
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effects of low-level laser therapy on the proliferation and apoptosis of gingival fibroblasts treated with zoledronic acid

Full text
Author(s):
Nogueira Pansani, T. [1] ; Goncalves Basso, F. [1] ; Silveira Turirioni, A. P. [1] ; Kurachi, C. [2] ; Hebling, J. [1] ; de Souza Costa, C. A. [1]
Total Authors: 6
Affiliation:
[1] UNESP Univ Estadual Paulista, Araraquara Sch Dent, Araraquara, SP - Brazil
[2] Univ Sao Paulo, Inst Phys, Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: International Journal of Oral and Maxillofacial Surgery; v. 43, n. 8, p. 1030-1034, AUG 2014.
Web of Science Citations: 10
Abstract

Low-level laser therapy (LLLT) has been indicated as an adjuvant therapy for bisphosphonate-induced osteonecrosis. However, the effects of LLLT on bisphosphonate-treated cells are not yet clear. This study evaluated the effects of LLLT on the proliferation and apoptosis of gingival fibroblasts treated with zoledronic acid (ZA). Cells were exposed to ZA at 5 mu M for 48 h. Irradiation was performed using a laser diode prototype (LaserTABLE, InGaAsP; 780 nm +/- 3 nm, 25 mW) at 0.5 or 3 J/cm(2), three times every 24 h. Cell proliferation and apoptosis were evaluated by fluorescence microscopy. Data were analyzed by Mann-Whitney test at the 5% level of significance. ZA decreased cell proliferation to 47.62% (interquartile range (IQR) 23.80-57.14%; P = 0.007) and increased apoptosis of gingival fibroblasts to 27.7% (IQR 20.9-33.4%; P = 0.0001). LLLT increased cell proliferation compared with non-irradiated cells, at 0.5 J/cm(2) (57.14%, IQR 57.14-71.43%; P = 0.003) and at 3 J/cm(2) (76.19%, IQR 61.90-76.19%; P = 0.0001), but did not increase cell proliferation in ZA-treated cells. Irradiated fibroblasts presented lower apoptosis rates than the ZA-treated cells, but apoptosis was no different in ZA-treated cells compared to those that were ZA-treated and also irradiated. (AU)

FAPESP's process: 09/54722-1 - In vitro evaluation of the effects of low level laser therapy on cultured osteoblasts, fibroblasts and keratonicytes submitted to zoledronic acid therapy
Grantee:Carlos Alberto de Souza Costa
Support Opportunities: Regular Research Grants
FAPESP's process: 10/08933-8 - IN VITRO EVALUATION OF LOW LEVEL LASER THERAPY ON FIBROBLASTS SUBJECTED TO ZOLEDRONIC ACID TREATMENT.
Grantee:Taisa Nogueira Pansani
Support Opportunities: Scholarships in Brazil - Scientific Initiation